1answer.
Ask question
Login Signup
Ask question
All categories
  • English
  • Mathematics
  • Social Studies
  • Business
  • History
  • Health
  • Geography
  • Biology
  • Physics
  • Chemistry
  • Computers and Technology
  • Arts
  • World Languages
  • Spanish
  • French
  • German
  • Advanced Placement (AP)
  • SAT
  • Medicine
  • Law
  • Engineering
Rufina [12.5K]
4 years ago
9

What does the second law of thermodynamics state?

Physics
1 answer:
bulgar [2K]4 years ago
3 0
In all energy transfers, if no energy leaves or enters the system, then the potential energy will always be less.
You might be interested in
If the earth had no atmospheres at all what would the sky look like
Stells [14]

Explanation:

After the shock of seeing animals falling from the sky and silence, comes what you may have already imagined; that is, we would die from lack of oxygen - and in about 3 minutes. The worst thing is that not even patients connected to respirators in hospitals or divers equipped with cylinders could survive, since there is a need for pressure to be able to breathe.

8 0
3 years ago
HELP ASAP!!
Nimfa-mama [501]
<h2>C. 20 T</h2>

The strength of the magnetic field is equal to 20 Tesla.

<h3>Explanation:</h3>

Given:

Induced potential difference = V = 12 V

Length of wire = L = 0.20 m

Speed of the moving wire = V = 3.0 m/s

Magnetic field strength = B = ?

A conductor, placed in a uniform magnetic field; when moved at a constant speed with respect to the field, leads to a changing magnetic flux, generating an electromotive force (EMF). Using, Faraday's law of magnetic induction, a moving conductor's induced EMF in terms of the magnetic field strength is given by :

E = L\times V\times B......................(1)

where

E = Induced potential difference (EMF)

L = Length of the conductor

V = Speed of the conductor moved with respect to the magnetic field

B = Strength of uniform magnetic field

Rewriting equation (1) for B, we get

B = \frac{E}{L\times V} = \frac{12}{0.2\times 3} = \frac{12}{0.6} = 20\ T

The strength of magnetic field is equal to 20 Tesla.

7 0
4 years ago
Clouds, wind, and rain are part of the _____.
Musya8 [376]
A its Stratosphere, Sorry I didn't see your answer, its bilogy I think not physics.. :)
8 0
3 years ago
A plastic rod is charged up by rubbing a wool cloth, and brought to an initially neutral metallic sphere that is insulated from
Pavlova-9 [17]

Answer:

A) is repelled by the sphere.

Explanation:

On rubbing the plastic rod with the wool cloth the rod gains some electrons from the surface of the wool and becomes electrostatically negative in charge.

When this rod is brought near to a neutral metallic sphere then the electrons of the sphere get repelled from the nearest portion of the metallic sphere as it a conductor and the electrons accumulate on the farthest opposite side of the rod.

But when the rod is brought into contact for some time then the from the portion of the rod which is in contact to the sphere loses the electrons from that region to the sphere since plastic is not an electrical conductor so not all the charges travel to the sphere.

Then when the rod is separated, the charges on the sphere spread uniformly and the similar charged rod faces repulsion.

4 0
3 years ago
The carnival ride has a 2.0m radius and rotates 1.1 times persecond.
Lady_Fox [76]

Answer:

a) v = 13.8 m / s , b) a = 95.49 m / s² , c) a force that goes to the center of the carnival ride  and d)   μ = 0.10

Explanation:

For this exercise we will use the angular kinematics relationships and the equation that relate this to the linear kinematics

a) reduce the magnitudes to the SI system

     w = 1.1 rev / s (2pi rad / 1rev) = 6.91 rad / s

The equation that relates linear and angular velocity is

     v = w r

     v = 6.91  2

     v = 13.8 m / s

b) centripetal acceleration is given by

     a = v² / r = w² r

     a = 6.91² 2

     a = 95.49 m / s²

c) this acceleration is produced by a force that goes to the center of the carnival ride

d) Here we use Newton's second law

     fr -W = 0

     fr = W

     μ N = mg

Radial shaft

      N = m a

      N = m w² r

      μ m w²  r = m g

      μ = g / w² r

      μ = 9.8 / 6.91² 2

      μ = 0.10

3 0
4 years ago
Other questions:
  • If a particle with a charge of +4.3 × 10−18 C is attracted to another particle by a force of 6.5 × 10−8 N, what is the magnitude
    13·1 answer
  • What is the loose covering of weathered rock particles and decaying organic matter overlying the bedrock of earths surface
    15·1 answer
  • According to the Stefan-Boltzmann law, how much energy is radiated into space per unit time by each square meter of the Sun’s su
    11·1 answer
  • Which of the following factors will increase the current in a stationary wire loop?
    6·2 answers
  • A 1000-kg weather rocket is launched straight up. The rocket motor provides a constant acceleration for 16-s, then the motor sto
    13·1 answer
  • When the temperature of a gas in a balloon is reduced by half, the average kinetic energy of the particles is
    15·1 answer
  • Signs of fatigue while driving include __________.
    6·2 answers
  • Describe the two main factors that influence the path of surface currents. Describe how water goes through the hydrolic cycle, s
    9·2 answers
  • Brad has three beakers of water. Each beaker contains 500 mL of water. The temperature of the water in the first beaker is 40°C.
    8·1 answer
  • What is a lol diagram.
    12·2 answers
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!